The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 18, 2012

Filed:

Oct. 04, 2010
Applicants:

Masaya Tsunoda, Kobe, JP;

Arjun Yadav, Kobe, JP;

Inventors:

Masaya Tsunoda, Kobe, JP;

Arjun Yadav, Kobe, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01); G06F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method of searching real numbers for a nearest neighbor to a query point includes a construction phase in which a database of the real numbers is prepared; and a search phase in which the nearest neighbor is searched by the use of the database. The database includes a series of buckets that respectively correspond to small one-dimensional spaces defined by dividing a one-dimensional space between a minimum real number and a maximum real number at regular intervals. The buckets include data about real number(s) falling in one of the small one-dimensional spaces corresponding to the bucket concerned, and the number of the real number(s). The search phase includes locating one of the buckets in which the query point falls; checking the bucket size of the located bucket whether the bucket size thereof is zero; and searching the nearest neighbor by the use of the data in the bucket.


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